Device for use in winding threads



A118 29 1950 c. G. JANSEN Erm. 2,520,409

DEVICE FOR USE 1N WINDING mans Filed sept. 9, 194e Syvum/vim Patented Aug. 29, 1950 DEVICE FOR USE IN WINDING THREADS Cornelius G. Jansen, Derk J.

Otto A. H. Waters, Arnhem,

E. Nijkamp, and Netherlands, as-

signors to American Enka Corporation, Enh,

N. C., a corporation oi Delawa Application September 9, 1948, Serial No. 695,682 In Germany June 3, 1941 Section l, Public Law 690, August 8, 1946 Patent expires June 3, 1961 This invention relates to the preparation of Warp and is more particularly concerned with the high speed preparation of warp from crepe threads.

In warping operations it is customary to support a large number of spools of thread on a creel and to draw the thread overhead from these spools to a beam on which the threads are wound in parallel relationship. During the passage of the threads from the spools to the beam, their path of travel and tension is very accurately controlled by the use of brakes, guides, reeds and the like so that the warp produced will be of high quality and so that the creeling speed may be maintained as high as several hundred meters per minute.

Conventional warping arrangements, as described above, are very eiiicient in most instances but have been found to be highly unsatisfactory in the warping of crepe due to the fact that crepe thread, if taken off a stationary spool in an overhead manner, tends to form loops and wrinkles that cannot be corrected by conventional creeling brakes, and that are often aggravated thereby. In some cases loops and wrinkles are actually formed by the brakes thema creel brake which may be applied to an ordinary overhead draw-oii' installation so that said installation may be used for the high speed warping of crepe threads.

Other objects and advantages of this invention will be apparent upon consideration of the following detailed description of a preferred embodiment thereof in commotion with the annexed drawings wherein: Y

Figure 1 is a view in elevation of a creel brake constructed in accordance with the teachings of the present invention; and

Figure 2 is a view in elevation of the creel brake of Figure 1 taken from a point of view 90 away from the viewpoint of Figure 1.

Referring now in greater detail to the drawings, the thread I issuing overhead from a bobbin, not shown, is first led through an eyelet 2 in a plate 3 which is supported from a standard 4. .It then passes behind a roller 5 which is mounted for free rotation on a stud 6, through a finger-like thread guide 1, around the roller 5, through the guide 'I again, around the roller 5 again and' iinally through the guide 'l and through an eyelet 8 mounted on a lever 9 to the warping beam, not shown.

selves because a twist is pushed up by the brake. n

In view of the foregoing it has been customary in the warping of crepe threads to employ rotatably mounted ilanged spools for supporting the thread on the creel, the spool being unwound tangentiallyrather than overhead. This arrangement is satisfactory so far as the elimination of loops and twists is concerned but is very inefiicient as to time consumed in eiiecting the warping operation, the loss of time resulting from the frictional drag of the rotatable spools which requires a low draw-off speed to prevent thread breakage. It has been found that to avoid breakage it is frequently necessary to reduce the draw-off speed to some thirty meters per minute.

It is therefore an object of this invention to provide warping apparatus that is capable of handling crepe threads at very high draw-01T speeds while wholly eliminating the formation of the objectionable loops and twists that characterized the previous efforts of the art in this direction.

Another object of this invention is to provide the portion Uponlrefcrence to Figure 1 it will be noted that the miler is provided with a base portion IIIl and that the end of the. level` 8, remote from the eyelet 8 is provided with a bifurcate brake portion II which underlies the base portion I0. As long as the thread i is continuous and its tension during passage through the eyelet 8 is suflicient to prevent sagging. the portion II of the lever 9 will lie parallel to the base I0 oi the roller 5 and the latter will turn freely. However, since the lever 9 is supported by the thread I in the position shown in Figure 2 it is apparent that upon thread breakage or sagging, the lever will pivot in a clockwise direction, as viewed in Figure 2, about its pivotal mount I2 in the base of the guide 1, the movement between the eyelet 8 and the pivot I2 being greater than the movement between the pivot I2 and the end of the brake portion I I. This pivotal movement causes Il of the lever 9 to bear against the base I0 of the roller 5 with braking effect.

In normal operation when the lever 9 is in the position shown in Figure 2, the roller 5 rotates, being driven by the moving thread I. In order 3 to prevent slippage of the thread on the roller the latter is provided with a surface of rubber or the like.

The finger-like thread guide 1 is provided with a plurality of thread-leading grooves at I2 which extend circumferentially in axially spaced relation to each other. These grooves are open for most of their length but are closed at a small common arcuate zone by a bridge I3 which deiines with the lands on the guide a plurality of small eyelets I4. Upon reference to Figure 1 it will be seen that the thread passes through one of these eyelets each timecit passes around the guide, the thread assumingya generally helical path in its passage around the roller 5 and the guide 1. The guide 1 and the stud 6 are supported from the standard 4 which is suitably attached by means not shown to the creel frame.

The plate 3 in addition t0 the eyelet 2 is also provided with an eyelet 2'. This is done so that the device of the present invention may -be used with either S-twist orZ-twist threads, the eyelets 2 and 2 lying on opposite sides of the roller 5, as can be seen upon reference to Figure 2.

In operation the thread I is led overhead from a package or the like suitably supported on the creel frame through one or the other of the eyelets 2 or 2', depending upon whether the thread is of the S- or Z-twist type. The thread is then led in a general helical path one or more times around the assembly comprised of the roller 5 and the thread guide 1, a diierent one of the grooves I2' and eyelets I4 being used for each turn of the thread. It will be understood that and wrinkles in the creeling of crepe. The brake which acts on the roller 5 serves to stop the roller when the thread breaks or when sufficient slack occurs to cause the lever 9 to move 'to a brake applying position, it being understood that the roller 5 is normally driven by engagement with the thread.

It is to be understood that while the foregoing description is directed to be a single embodiment of this invention, modiiications are possible within the scope of the invention as dened by the appended claims.

What is claimed is:

1. An assembly for .use in preventing tangling during the overhead unwinding of crepe thread comprising a. verticallymounted sub-assembly including a roller mounted for rotation about a vertical axis and adapted to be driven by frictional contact with the moving thread and a thread guide in substantially parallel spaced relation to the axis of said roller, said guide having a plurality of axially spaced grooves and eyelets therein, means constituting a part of the assembly deiining a pair of eyelets in the thread path leading to said sub-assembly, one of said eyelets lying on one side of said roller and the other eyelet lying on the other side of said roller, and means also constituting a part of the assembly defining an eyelet in the thread path leading from said sub-assembly whereby, depending upon the direction of twist of the thread, it may be led iirst through one or the other of the eyelets in the thread path leading to the sub-assembly, then in a generally helical path one or more times about the roller and through the eyelets of the guide, and nally through the eyelet in the thread path leading from the sub-assembly.

2. A oreeling brake for use in preventing tangling in the overhead unwinding of crepe thread comprising a vertically mourced assembly inlcluding a roller mounted for rotation about a vertical axis and adapted to be driven by frictional contact with the thread and a guide adjacent said roller, said guide defining a plurality of spaced eyelets, means defining an eyelet in the thread path to said assembly, and a lever pivoted in the base of said thread guide, one end of said lever constituting a brake portion adapted to bear against the underside of said roller to retard rotation thereof, and the other end of said lever having an eyelet therein, said lever being movable from a normal position in which the eyelet end is down and the brake portion is in braking position to a raised position in 4which the eyelet end is up and the brake portion is in roller releasing position, the eyelet end of said lever being supported in raised position by the thread leading from said assembly, rupture or slack in the thread causing said lever to fall to normal position.

CORNELIUS G. JANSEN. DERK J. E. NIJKAMP. OTTO A. H. WATERS.

REFERENCES CITED The following references are of record in the file of this Ipatent:

UNITED STATES PATENTS Number Name Date 904,869 Haywood Nov. 24, 1908 2,266,632 p Frey Dec. 16, 1941 

